Throttle governor



Se t. 9 1924.

1,507,869 1. T. SWARTZ THROTTLE GOVERNOR Filed Aug. 4, 19

2 Shoots-Sheet 2 mill/WW INVENTOR. Ira T. Swarcz BY P ra MM ATTORNEY;

Patented Sept. 9, 1924.

PATENT OFFICE.

IRA T. SWARTZ, OF INDIANAIBOLIS, INDIANA.

THROTTLE GOVERNOR.

Application filed August 4, 1919.

T 0 all 10 7mm it may concern Be it known that I, IRA T. SWARTZ, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Throttle Governors,

of which the following is a specification.

This invention relates to governors for throttle uilves for internal combustion engines, and more especially to means whereby the throttle may be automatically operatei'l to regulate the engine speed to correspond with varying loads on a generator operated by the engine. Hitherto in throttle gover nors of the automatic type many disadvantages were encountered in that such devices were not reliable, the engine being liable to run away and various parts to bind or gum up, thus rendering the governor inoperative or unduly slow of action.

It is among the objects of this invention to obviate these disadvantages and to produce a device which is compact, reliable, sim ple in construction and positive in its action.

In carrying the objects of my invention into effect I provide a throttle valve in the manifold of the engine and adapted to close in two positions. The throttle is fixed to a shaft mounted in the manifold and I attach to this shaft a plunger operated by electromagnetic means, preferably a solenoid. And I further provide a system of adjustable weights and other devices to render the action of the governor certain and to allow of adjustment to take care of various operating conditions.

Referring to the accompanying drawings forming a part hereof, andin which similar reference characters denote similar parts,

Figure 1, is a vertical sectional. view through the governor,

Figure 2, an end section thereof,

Figure 3, a view of the opposite end of the governor showing the adjustable latch held weight, and

Figure 4:, a cross section through the mani fold showing various positions of the throttle valve.

The manifold 1 of the engine carries a throttle valve 2 preferably elliptical in shape and fiXGd to the shaft 3 which is journaled in the casing so as to allow of the throttle valve being moved into closed positions 4E and 5, approximately degrees apart. To the end 6 of the shaft 3 is attached a weight member 7 adapted to be adjustably held by a nut Serial No. 315,190.

to a screw threaded arm 9 fixed to the end 6 of the shaft. A tooth 10 is formed on said arm adapted to engage a corresponding tooth 11 carried by a latch 12 pivoted to the engine manifold at 13.

The opposite end let of the shaft 3 has attached to it a counter weight 15 adjustably secured to the shaftby set screw 16 and having its opposite end formed into an extendmg arm 17 upon which is mounted plunger rod 18 pivoted to said arm at 19. To the other end of the plunger rod is pivoted at 20 the plunger 21 which slides in a cylinder 22 which it fits rather closely. The lower end of the cylinder is closed by a bottom 23 forming an air cham 28 serves as a means for enclosing the gov-.

ernor mechanism. A cover plate 29 removably held to the casing allows of ready access to the device for adjustment purposes and for repairs.

The operation of the device is as follows:

The weight 7 is adjusted so as to be sensitive to the desired voltage, the adjustment being such that when the weight is moved outwardly upon screw member 9 it corresponds to a greater voltage and thus to a greater speed of engine. The latch is fixed in place as shown in Figure 3, the throttle then being in open position as shown by the full lines of Figure 4. The engine is started and as the voltage builds up the pull of solenoid 24 on plunger 21 becomes great enough to gradually lift the plunger thus disengaging the latch 12 from the weight 7. The governor is now responsive to any increase or decrease of voltage moving the throttle valve into more or less open or closed position and closely regulating the voltage.

Should there be sudden excessive demand for current upon the load lines the solenoid 24 is suddenly robbed of its volti of the engine upon the increasein demand upon it. A further feature of this device is e that when the load is suddenly taken away or becomes light the voltage in coil 24 builds up rather rapidly pulling the plunger 21 up and-moving the throttle valve towards a closed position in a direction as shown at If an electrical connection 'breaks the plunger is released closing the throttle valve at 5 and preventing the engine from running away.

fla iiig lls nlly de e b nw said nent en What I aira ne an e ire o ecure y Le te s Pate t, i

electr c po e system incl ing engine and a generator driven thereby, means for preventing momentary fluctuations of the engine speed comprising a throttle-valve, a solenoid in circuit with the generator, a cylindrical plunger armature in the solenoid connected to the throttle arranged to be-moved in one direction by the solenoid and in the other by gravity, and a cylindrical casing about the ai rnature providing a dashpot therefor to prevent sudden closing of the throttle on temporary failure of the solenoid, substantially as set forth.

2. In an electric power system including an engine and a generator driven thereby, means for prevnting momentary fluctuations of the engine speed comprising a tl lrQtr .tle valve, a solenoid in circuit with the "generator, a plunger armature connected to. the

throttle arranged to be moved in one direction by the solenoid and in the other gravity, and a dashpotin connection with H. V. BrnRMAN, M. L. SHULER. 

